Are Basel's Capital Surcharges for Global Systemically Important Banks Too Small?, Accessible Data

Accessible version of figures

Estimated Global Systemically Important Bank Capital Surcharges

Figure 1: Best Estimate

(in basis points)
G-SIB Scores Bucket 0
52-129
Bucket 1
130-229
Bucket 2
230-329
Bucket 3
330-429
Bucket 4
430-529
Bucket 5
530-629
Capital Surcharges (rounded to nearest 25 basis points)
Basel 0 100 150 200 250 350
Estimation
Lower Reference Bank Score 125 275 350 400 425 475
Estimated Probability of Default 225 475 625 700 775 825
Effect of Short-Term Funding 400 825 1050 1200 1325 1400

Note: See BCBS (2013) for details about the global systemically important bank (G-SIB) score. For Basel capital surcharges, the reference bank G-SIB score is 130 basis points; for the best estimate, the reference bank G-SIB score is 52 basis points, which is the lower bound of the one-sided 95 percent confidence interval of the correlated loss model centered at 130 basis points. Probability of default and the effect of short-term funding are estimated using the lower tail of the return on risk-weighted assets distribution from 2008-2013. Bucket 5 is crossed out to indicate that it is empty (Financial Stability Board, 2016). Continuous capital surcharges are based on a capital conservation buffer of 2.5 percent from BCBS (2010).

Source: BCBS (2016a), BCBS (2016b), Bureau van Dijk (2016), Financial Stability Board (2016).

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Figure 2: Optimistic Estimate: High Confidence in Other Basel III Reforms

(in basis points)
G-SIB Scores Bucket 1
130-229
Bucket 2
230-329
Bucket 3
330-429
Bucket 4
430-529
Bucket 5
530-629
Capital Surcharges (rounded to nearest 25 basis points)
Basel 100 150 200 250 350
Estimation
Estimated Probability of Default 100 250 325 400 450
Effect of Short-Term Funding 150 350 475 575 650

Note: See BCBS (2013) for details about the global systemically important bank (G-SIB) score. For Basel capital surcharges and the optimistic estimate, the reference bank G-SIB score is 130 basis points. Probability of default and the effect of short-term funding are estimated using the lower tail of the return on risk-weighted assets distribution from 2008-2013; the optimistic estimate uses the lower bounds of the 95 percent confidence intervals of estimated parameters. Bucket 5 is crossed out to indicate that it is empty (Financial Stability Board, 2016). Continuous capital surcharges are based on a capital conservation buffer of 2.5 percent from BCBS (2010).

Source: BCBS (2016a), BCBS (2016b), Bureau van Dijk (2016), Financial Stability Board (2016).

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Figure 3: Pessimistic Estimate: Low Confidence in Other Basel III Reforms

(in basis points)
G-SIB Scores Bucket 0
16-129
Bucket 1
130-229
Bucket 2
230-329
Bucket 3
330-429
Bucket 4
430-529
Bucket 5
530-629
Capital Surcharges (rounded to nearest 25 basis points)
Basel 0 100 150 200 250 350
Estimation
Lower Reference Bank Score 325 475 525 575 600 625
Estimated Probability of Default 675 1000 1125 1225 1275 1350
Effect of Short-Term Funding 1300 1875 2150 2300 2425 2525

Note: See BCBS (2013) for details about the global systemically important bank (G-SIB) score. For Basel capital surcharges, the reference bank G-SIB score is 130 basis points; for the pessimistic estimate, the reference bank G-SIB score is 16 basis points, which is the minimum G-SIB score in the Basel sample of banks. Probability of default and the effect of short-term funding are estimated using the lower tail of the return on risk-weighted assets distribution from 2008-2013; the pessimistic estimate uses the upper bounds of the 95 percent confidence intervals of estimated parameters. Bucket 5 is crossed out to indicate that it is empty (Financial Stability Board, 2016). Continuous capital surcharges are based on a capital conservation buffer of 2.5 percent from BCBS (2010).

Source: BCBS (2016a), BCBS (2016b), Bureau van Dijk (2016), Financial Stability Board (2016).

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